Composite pile



E. CASE. Composite Pile.

INVBNTOR:

I WITNESSES: fl- %/M/% N PEYERS. PHOTO-UTHOGRAPHER, WASHINGTONv I)v C4UNITED STATES PATENT OFFICE.

HENRY CASE, OF BROOKLYN, NEW YORK.

COMPOSITE PILE.

SPECIFICATION formingpart of Letters Patent No. 224,646, dated February17, 1880. Application filed January 10, 1880.

To all whom it may concern:

Be it known that I, HENRY CASE, of Brooklyn, in the county of Kings andState of New Yorlghave invented a new and Improved Gomposite Pile, ofwhich the following is a specification.

Figure l is a vertical elevation of a pile, partly in section. Fig. 2 isa transverse section on line as :20, Fig. 1. Fig. 3 is a perspectiveview of the cap of the pile attached to the top of the pile. Fig. 4 is aplan of the pile with the cap removed.

Similar letters of reference indicate corresponding parts.

The object of this invention is to provide a composite pile forsubmarine foundations and other purposes that shall withstand decay orthe attack of worms and insects better than a wooden or iron pile.

In the drawings, A represents the wooden pile provided with shoes B,formed of strips of wood fastened across the faces of the pile incontact with each other. C is the metal tube composing the upper part ofthe pile and inclosing the upper part of the wooden pile A. Resting uponthe upper shoes, B, of the sunk so that the upper shoe, B, shall be beneath the surface of the soil, where it cannot be reached by marineworms or insects, while the metal tubular part of the pile extendsupward above the .surface of the water to any desired height, and on itstop is a metal cap, E, whose upper surface is rectangular and channeledor grooved, as shown, for the reception of the sills of a pier or othersuperstructure, and said cap E is intended to be se- 5 cured to the topof the metal part of the pileby bolts which pass through the tube 0 andthe wooden pile A. The said cap E also protects the top of the woodenpile from atmospheric influences.

It is found in submarine foundations that that part of a metal pilewhich is sunk in the soil quickly corrodes, and that part of the woodenpile which extends upward above the soil or bed of river or harbor isquickly destroyed by marine worms and insects. These objections to theuse of piles constructed wholly of metal or wood are removed by the useof this composite pile, as herein shown, the wooden part of the pileenduring almost indefinitely in the soil of river or harbor bed, whilethe metal part of the pile successfully resists all attacks of marineworms or insects in the water. The pile is lighter and cheaper than onecomposed of metal entirely, and much stronger than one composed entirelyof wood, while the shoes on the pile support it firmly in an uprightposition. The metal tubular portion of the pile also will itself beuninjured by floating ice, and serve at the same time as an efficientprotector of the wooden portion of the pile against ice and otherfloating objects.

Having thus described my invention, I claim as new and desire to secureby Letters Patcut-- The combination of the wooden pile A, provided withshoes B, with the tubular metal pile 0, provided with a flanged shoe, D,substantially as herein shown and described.

HENRY CASE.

Witnesses:

I. I. SToRER, O. SEDGWIGK.

